Localising State-of-Polarisation Perturbation on a Repeatered Link Using Wavelength Dispersion Delay Walk-Off. - Kristina Skarvang Vaskinn; Daniel J. Elson; Shohei Beppu; Daiki Soma; Steinar Bjørnstad; Dag Roar Hjelme; Yuta Wakayama (OFC, 2025)